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"About 90 minutes after fertilization, the zygote divides into two cells." - With what reference? According to Biology by Campbell & Reece (sixth edition) does the first division of the human zygote complete 36 hours after fertilization, followed by the second at 60 hours and third by 72 hours. Zewz ( talk) 11:05, 20 March 2010 (UTC)
This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||||||||
|
"About 90 minutes after fertilization, the zygote divides into two cells." - With what reference? According to Biology by Campbell & Reece (sixth edition) does the first division of the human zygote complete 36 hours after fertilization, followed by the second at 60 hours and third by 72 hours. Zewz ( talk) 11:05, 20 March 2010 (UTC)